Rachel commutes to work every morning without fail on the train. On this ride, she gazes out the window and markedly stares at her favourite house to pass by: the one with the image of a beautiful couple with a beautiful life lovingly watching the morning from the top floor balcony in a blissful daze. Rachel longs for that type of happiness, a happiness that she once had and recently lost. When Rachel takes the train one morning to find the girl on the balcony kissing someone other than her husband, she finds herself spiralling all over again and almost immediately stuck within the mystery of the girl on the balcony, the therapist, her ex-husband and the woman who stole him from her, and an ugly murder.

I enjoyed this book mainly for its mystery. I felt that the plot was well written and kept me intrigued for most of the book. The writing was simple and felt suited for the genre of the novel. The thrills reels you in and never let the reader go.

If you like this, similar books include Gone Girl by Gillian Flynn and The Girl with the Dragon Tattoo (Millennium trilogy) by Stieg Larsson because their plots closely resemble that of this novel and they belong to the same gripping genre.